ACHATINELLA.— Plate TV. 



plicate, lip of the aperture but little thickened ; olive 

 or whitish, \vith oblique light red-brown streaks, 

 variously painted with spiral black or green or brown 

 bands and lines, columella purple-rose. 

 Feeussac, Hist. Moll. pi. 155. f. 1. 

 ffai. Sandwich Islands. 



The colouring of this species is extremely variable ; there 

 is, however, but one prevailing idea in its manner of dis- 

 tribution. The columella is of a livid purple-rose in all 

 the varieties. I consider A. Slewartii, Green, to be a 

 distinct species, notwithstanding that it resembles this in 

 the colour of the columella ; and A. livida, Swainson, 

 whose figure is only a magnified representation of an in- 

 mature shell, cannot be referred to it without considerable 

 doubt. 



Species 30. (Mus. Cuming.) 



AcHATiNELLA. ADUSTA. Achat, testd acuminato-oblongd, 

 suiturritd, sinidrorsd, anfractihus rotundatis, colu- 

 melld Irevi, callosd, dentatd ; intense cadaned, basi 

 nigricante,fascid spirali nigrd infra mturas, columelld 



The scorched Achatinella. Shell acuminately ob- 

 long, somewhat turreted, sinistral, whorls rounded, 

 columella short, caUous, toothed ; dark chestnut, 

 darker towards the base, with a spiral black baud 

 beneath the sutures, columella pinkisli. 



Hab. -? 



The general colouring of this species, which is allied to 

 A. ■mdpina and Stewarii, is similar to A. castatiea, in which 

 the black sutural band is wanting, and in which the colu- 

 mella is particularly white. 



Species 31. (Mus. Cuming.) 



Achatinella venthlus. Achat, teddoblongo-cylindraced, 

 dextrorsd, anfractibus plano-convexis, subtilissime im- 

 presso-striatis, ad suturas leviier crenulatis, columelld 

 brevi, arcnatd, tenue contorto-plicatd, aperturd parvd ; 

 intense brumied, fascid pallida infra suturas et circa 

 columellam, epidermide tenid indutd, apertura favce 

 ceerulescente. 



The slightly-inflated Achatinella. Shell oblong- 

 cylindrical, dextral, whorls flatly convex, vei-y finely 

 impressly striated, slightly crenulated at the sutures, 

 columella short, arched, thinly twisted-plaited, aper- 

 ■ ture small ; very dark brown, with a pale band beneath 

 the sutures and around the columella, covered with a 

 slight epidermis, interior of the aperture bluish. 



Helix {Cochlogena) ventulus, Fenissac, Prodi-ome, no. 437. 

 Achatinella microstoma, Gould (fide Pfeifl'er). 



Hab. Oahu, Sandwich Islands ; Hinds. 



A dark cylindrical sub-horny shell with a slight fuga- 

 cious epidermis. 



